package demo;

import java.io.IOException;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import topsun.framework.utility.StringHelper;

public class HelloFilter implements Filter
{

	@Override
	public void init(FilterConfig arg0) throws ServletException
	{
		System.out.println("Filter 初始化");
	}

	@Override
	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException 
	{
		HttpServletRequest request = (HttpServletRequest)req;
		System.out.println("拦截 URI="+request.getRequestURI());
		
		chain.doFilter(req, res);
		 
	}

	@Override
	public void destroy() 
	{
		System.out.println("Filter 结束");
	}
}
